focal spot
21židinio dėmė — statusas T sritis radioelektronika atitikmenys: angl. focal spot vok. Brennfleck, m rus. фокусное пятно, n pranc. spot focal, m …
22фокусное пятно — židinio dėmė statusas T sritis radioelektronika atitikmenys: angl. focal spot vok. Brennfleck, m rus. фокусное пятно, n pranc. spot focal, m …
23chromatic aberration — [1] An enlargement of the focal spot caused in a cathode tube, by the differences in the electron velocity distribution through the beam. [2] An enlargement of the focal spot caused in an optical lens system using white light, by the refractive… …
24Fluorescence correlation spectroscopy — (FCS) is a common technique used by physicists, chemists, and biologists to experimentally characterize the dynamics of fluorescent species (e.g. single fluorescent dye molecules in nanostructured materials, autofluorescent proteins in living… …
25ExAblate — The ExAblate (also known as ExAblate 2000) is a non invasive medical device manufactured by InSightec, a company based in Haifa, Israel with its US office in Dallas, TX. The ExAblate uses MRI guided Focused Ultrasound Surgery (MRgFUS) technology …
26Shack-Hartmann — A Hartmann Shack or Shack Hartmann is a type of wavefront sensor. It is commonly used in adaptive optics systems. It consists of an array of lenses (called lenslets) of the same focal length. Each is focused onto a photon sensor (typically a CCD… …
27Wavefront curvature sensor — A wavefront curvature sensor is a device for measuring the aberrations of an optical wavefront. Like a Shack Hartmann sensor it uses an array of small lenses (or lenslets) to focus the wavefront into an array of spots. Unlike the Shack Hartmann,… …
28Radial polarisation — A beam of light has radial polarisation if at every position in the beam the polarisation (electric field) vector points towards the centre of the beam. In practice, an array of waveplates may be used to provide an approximation to a radially… …
29X-ray microscope — An X ray microscope uses electromagnetic radiation in the soft X ray band to produce images of very small objects. Unlike visible light microscopes, X rays do not reflect or refract easily, and they are invisible to the human eye. Therefore the… …
30Two-photon absorption — (TPA) is the simultaneous absorption of two photons of identical or different frequencies in order to excite a molecule from one state (usually the ground state) to a higher energy electronic state. The energy difference between the involved… …
